Mission Operations Days: 2001/237 to 2001/243
August 25, 2001 00:00:00 GMT to August 31, 2001 00:00:00 GMT
Terra Spacecraft and MODIS Instrument Status:
Terra (AM-1) is in Normal Ops Mode MODIS is in Science Mode - A Side |
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Component | State(s) | Comment |
Blackbody | A On (290 K); B Off | Nominal |
Calibration Electronics | A On; B Off | Nominal |
Control Processor | A On; B Off | Nominal |
Nadir Door | Unlatched, Open | Nominal |
Space View Door | Unlatched, Open | Nominal |
Solar Diffuser Door | Unlatched, Closed | Nominal |
FDDI Formatter | A On; B Off | Nominal |
FDDI Port | A On; B Off | Nominal |
FIFO Memory | #1 & #2 On; #3 & #4 Off | Nominal |
Format Processor | A On; B Off | Nominal |
Power Supplies | #1 On; #2 Off | Nominal |
PV VIS FPA | A On; B Off | Nominal |
PV NIR FPA | A On; B Off | Nominal |
PV SMIR FPA | A On; B Off | Nominal |
PV LWIR FPA | A On; B Off | Nominal |
PC LWIR FPA | A On; B Off | Nominal |
RC Outgas Heaters | All Off (CS, IS, OS) | Nominal |
RC LWIR FPA Heater | On (83 K) | Nominal |
RC SMIR FPA Heater | Off | Nominal |
Scan Assembly | A On; B Off | Nominal |
SDSM | A Off; B Off | Nominal |
SRCA | A Off; B Off | Nominal |
PS1 Survival Heater | Enabled | Nominal |
PS2 Survival Heater | Enabled | Nominal |
Timing Generator | A Off; B On | Nominal |
Flight Software | Rev BD + 2 set of patches
|
Nominal |
Inhibit Ids Set | None | Nominal |
TMON 66 (SRCA A) | Disabled | Nominal |
TMON 67 (SRCA B) | Disabled | Nominal |
TMON 68 (FIFO) | Enabled | Nominal |
TMON 69 (EPS Current) | Disabled | Nominal |
This Week's Completed MODIS Activities:
Saturday, August 25, 2001
None
Sunday, August 26, 2001
None
Monday, August 27, 2001
None
Tuesday, August 28, 2001
one
Wednesday, August 29, 2001
2001/241 20:21:04 ATC OA-16: SD/SDSM Screened
2001/241 21:59:57 ATC OA-15: SD/SDSM Open
Thursday, August 30, 2001
None
Friday, August 31, 2001
None
This Week's Scheduled MODIS Activities Not Completed:
The formatter memory loads were not performed to clear the existing error addresses/counts.
Upcoming MODIS Events:
Friday, August 31, 2001
None
Saturday, September 1, 2001
None
Sunday, September 2, 2001
None
Monday, September 3, 2001
None
Tuesday, September 4, 2001
Anticipated day to perform memory load to clear FR error/count buffers
Wednesday, September 5, 2001
Two orbits with SMIR Itwk/Vdet of 79/110
SD/SDSM calibrations
Thursday, September 6, 2001
None
Friday, September 7, 2001
None
Maneuvers:
The next Lunar Calibration roll maneuver is scheduled for day 2001/250 (September 7, 2001) with data collection from 20:03:47 to 20:10:17. The roll angle will be -7.5106 degrees.
MODIS Anomalies:
The rate of formatter “error events” has increased during the past week to approximately 60-120 per day. There still have not been any noticeable impacts to operations.
General Instrument Comments:
MODIS is in Science Mode on the A-side with the SVD and NAD open, operating with the Formatter Resolution Flight Software Patches (FRFSP).
Note: SD/SDSM calibrations were planned to be reduced to once per two weeks. This plan has been revised; SD/SDSM calibrations will continue to be scheduled once each week until the end of November.
MODIS Telemetry Trends:
Trending has resumed with the instrument on the A-side. With the currently decreasing beta angle, the amount of focal plane heater margin is increasing. The intermediate stage cooler temperature is stable.
Non-MODIS Significant Events:
None.
Limited Life Item Status:
SRCA 10W Lamp #1: 189.1 of 500 hours
SRCA 10W Lamp #2: 144.8 of 500 hours
SRCA 10W Lamp #3: 154.0 of 500 hours
SRCA 10W Lamp #4: 61.5 of 500 hours
SRCA 1W Lamp #1: 558.0 of 4000 hours
SRCA 1W Lamp #2: 276.3 of 4000 hours
Solar Diffuser Door: 1691 of 3022 Movements
Nadir Aperture Door: 532 of 1316 Movements
Space View Door: 437 of 1316 Movements